Journal of the Korean Society of Mineral and Energy Resources Engineers ISSN:2288-0291(Print) 2288-2790(Online) 한국자원공학회지

The hydrogeochemical characteristics of groundwater in the northern part of the East Coast of Kangwon-Do have been studied through the measure of groundwater tables and the analyses of the chemical constituents and environmental isotopic compositions of groundwater. Among the streams (Jusucheon, Namdaecheon, Jeoncheon and Osipcheon) in the study area, the Jeoncheon area has been proved to be a favorable site to supply water resources by use of groundwater to the nearby water shortage areas. The physicochemical properties and chemical characteristics of the groundwater are believed to be closely related with geological properties of aquifers. Even though Hageonori and Seongnam in Osipcheon area have similar aquifers of limestone, they show different flow patterns. Groundwater flow in Hageonori is mainly controlled by a conduit flow system which has short residence time of groundwater in aquifer while a diffuse flow system which has longer residence time dominates over Seongnam. In groundwater developement of limestone area, it must be considered to protect the input of contaminated water. From the results of a factor analysis, the dissolution of the limestone is interpreted to play an important role in the concentration of dissolved solids of groundwater. The compositions of oxygen and hydrogen isotopes in groundwaters of study region indicate that the groundwaters are originated from meteoric water and affected by seasonal variation.